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Automobile mounted automatic diagnosis method based on RSA ciphering and signature algorithm

A vehicle-mounted automatic diagnosis and automobile technology, which is applied in the direction of vehicle testing, engine testing, machine/structural component testing, etc., and can solve problems such as adverse consequences, transmission errors, and artificial data tampering

Active Publication Date: 2009-04-29
苏州国芯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the on-board automatic diagnosis OBD system usually sends the information obtained by the on-board automatic diagnosis OBD to the relevant departments through wireless data transmission or wired network data transmission, so there is inevitably the possibility of transmission errors or artificial tampering of data, which will affect The vehicle management department or the vehicle breakdown repair center makes correct judgments on the acquired data information, resulting in adverse consequences

Method used

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  • Automobile mounted automatic diagnosis method based on RSA ciphering and signature algorithm
  • Automobile mounted automatic diagnosis method based on RSA ciphering and signature algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] Embodiment: A kind of car on-board automatic diagnosis OBD system and method based on RSA encryption and signature algorithm

[0053] Part 1: On-board automatic diagnosis OBD system

[0054] (1) The overall design of the system:

[0055] attached figure 1 It is the structural block diagram of the system storing OBD data, attached figure 2 It is a structural block diagram of the system receiving OBD data. In the system structure of storing OBD data, the relevant data information is encrypted and signed to ensure the integrity, security and uniqueness of the collected data. In the system structure of receiving OBD data, signature verification and decryption are performed on the received relevant data information, so as to ensure that the received information is accurate and meaningful.

[0056] (2) Structure design for storing OBD data

[0057] Such as figure 1 As shown, the system of the present invention collects some basic related information such as the emissio...

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Abstract

The present invention provides an automatic on-board diagnostics method for automobiles based on an RSA encryption and signature algorithm, characterized in that on the basis of an automatic on-board diagnostics (OBD) system, the method comprises the processes of (1) data collecting; (2) data encrypting and signing; (3) data transmitting; (4) data decoding and signature validating; (5) data analysing. After data sampling, corresponding data information is encrypted and Signature-calculated, therefore, integrality, security and uniqueness of the sampled data can be assured. After that OBD data is received, corresponding data information is signature-validated and decrypted, therefore, the received data is assured to be correct and significative and the whole OBD system can run more stably and safely.

Description

technical field [0001] The invention relates to a vehicle-mounted automatic diagnosis method for automobile faults and exhaust emissions, in particular to a vehicle-mounted automatic diagnosis method based on RSA encryption and signature algorithms. Background technique [0002] The automobile engine management system can effectively improve the emission level of the vehicle and reduce the emission of pollutants, but at the same time, the failure or damage of the components of the engine management system will lead to a sharp increase in the emission of pollutants, and the performance of these components will continue during the use of the vehicle. reduced or even damaged. How to detect the performance of these components in time and prompt the driver related fault information, so that the vehicle can be maintained and repaired in time, usually uses the OBD (On Board Diagnosis) system. [0003] The main working method of the on-board automatic diagnosis OBD system is to fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/08G01M17/00G01M15/00
Inventor 肖佐楠苏世功郑茳匡启和
Owner 苏州国芯科技股份有限公司
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